// less嵌套语法
// less允许按照html嵌套结构去写嵌套的选择器
.wrap{
    width: 800px;
    margin: 50px auto 0;
    background-color: #eee;
    .header{
        height: 80px;
        background-color: lightblue;
        h3{
            font-size: 20px;
            font-weight: normal;
        }
        p{
            font-size: 18px;
            color: blue;
        }
    }
    .content{
        overflow: hidden;
        height: 400px;
        .left{
            float: left;
            width: 100px;
            height: 100%;
            background-color: lightgreen;
        }
        .right{
            float: left;
            width: 700px;
            height: 100%;
            background-color: lightpink;
        }
    }
    .footer{
        height: 80px;
        background-color: lightsteelblue;
        span{
            font-size: 16px;
        }
    }
}